Unless somethings changed with DC management, I doubt it. In MK vs DC they toned shit WAY down when it came to fatalities, and they still wound up having to censor some of them(off screen gunshots instead of showing them, even though they were tame as hell).Totally agree and id even be surprised if we dont see a DC villain.
Having any DC villain get their face sliced off is probably not something DC is willing to sign off on, especially when MKX is looking to be the most visually violent MK yet. It might make some sense thematically, as some of those characters have been involved in some really dark shit, but it doesn't matter if the marketing and legal team tell management that it wouldn't look good for the image/brand or some such thing.